Increasing Array

#include <iostream>

using namespace std;

int main() {
    int n;

    cin >> n;

    int *d = new int[n];

    for (int i = 0; i < n; i++) {
        cin >> d[i];
    }

    int m = d[0] + 1;
    int t = 0;

    for (int i = 1; i < n; i++) {
        if (d[i] < m) {
            int t0 = m - d[i];
            if (t0 > t)
                t = t0;
            m += 1;
        } else if(d[i] >= m) {
            m = d[i] + 1;
        }
    }

    cout << t << endl;

    delete[] d;

    return 0;
}

Test 1

Verdict: WRONG ANSWER

Test 2

Verdict: WRONG ANSWER

Test 3

Verdict: WRONG ANSWER

Test 4

Verdict: WRONG ANSWER

Test 5

Verdict: WRONG ANSWER

Test 6

Verdict: WRONG ANSWER

Test 7

Verdict: ACCEPTED